CN106128955A - A kind of production technology of diode - Google Patents

A kind of production technology of diode Download PDF

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Publication number
CN106128955A
CN106128955A CN201610618017.2A CN201610618017A CN106128955A CN 106128955 A CN106128955 A CN 106128955A CN 201610618017 A CN201610618017 A CN 201610618017A CN 106128955 A CN106128955 A CN 106128955A
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CN
China
Prior art keywords
diode
backlight unit
temperature
diode chip
baking
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CN201610618017.2A
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Chinese (zh)
Inventor
周淑清
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Anhui Beilai Electronic Technology Co Ltd
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Anhui Beilai Electronic Technology Co Ltd
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Priority to CN201610618017.2A priority Critical patent/CN106128955A/en
Publication of CN106128955A publication Critical patent/CN106128955A/en
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L29/00Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
    • H01L29/66Types of semiconductor device ; Multistep manufacturing processes therefor
    • H01L29/66007Multistep manufacturing processes
    • H01L29/66075Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials
    • H01L29/66083Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials the devices being controllable only by variation of the electric current supplied or the electric potential applied, to one or more of the electrodes carrying the current to be rectified, amplified, oscillated or switched, e.g. two-terminal devices
    • H01L29/6609Diodes

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Ceramic Engineering (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Led Device Packages (AREA)
  • Structures Or Materials For Encapsulating Or Coating Semiconductor Devices Or Solid State Devices (AREA)

Abstract

The invention provides the production technology of a kind of diode, relate to electronic devices and components manufacture technology field, including welding, pickling, mold pressing, thermoset forming, plating and low-temperature bake, welding material is put in soldering furnace, diode chip for backlight unit group is carried out high-temperature soldering, and temperature is 300 310 DEG C;The diode chip for backlight unit welded carries out chemical attack to diode chip for backlight unit surrounding edge respectively by mixed acid;Diode chip for backlight unit after acidifying and encapsulation bed material sheet are put in mould, and with black glue, diode chip for backlight unit is carried out injection molding packaging;The diode molded is put into curing oven 7 9h of 280 300 DEG C, to improve the reliability of plastic packaging material;Formed the tin layers of thin film again at Diode facets by plating;Finally, then carry out low-temperature bake.Present invention process step is simple, simplifies operation, and real cost of production is less, and diode prepared by this method has preferable positive tropism, reverse property, breakdown characteristics, and reliable and stable, substantially prolongs the service life of diode.

Description

A kind of production technology of diode
Technical field
The present invention relates to electronic devices and components manufacture technology field, particularly relate to the production technology of a kind of diode.
Background technology
Diode, also known as crystal diode, is called for short diode (diode);It is only toward the electronics zero of a direction transmission electric current Part.It is a kind of device with 2 terminals that 1 Part No. engages, and has the direction according to applied voltage, makes electric current flow Or immobilising character.Crystal diode is a p-n junction formed by p-type semiconductor and n-type semiconductor, in its interface two Side forms space charge layer, and has built-in field.When there is not applied voltage, owing to p-n junction both sides carrier concentration is poor The drift current that the dissufion current caused and built-in field cause is equal and is in electric equilibrium state.Major part diode is possessed The sense of current we be normally referred to as " rectification (Rectifying) " function.The most common function of diode is exactly only to allow Electric current by (referred to as forward bias voltage drop), is blocked (referred to as reverse bias) time reverse by single direction.Therefore, diode can be thought of as The non-return valve of electronic edition.But actually diode can't show the directivity of so perfect Push And Release, but more Complicated non-linear electronic feature this determined by certain types of diode technologies.Diode uses except being used as A lot of other functions is also had outside the mode of switch.
Summary of the invention
The invention provides the production technology of a kind of diode, including welding, pickling, mold pressing, thermoset forming, plating and low Temperature baking.
The production technology of a kind of diode, including welding, pickling, mold pressing, thermoset forming, plating and low-temperature bake, two poles The production technology of pipe is as follows:
(1) welding: putting in soldering furnace by welding material, diode chip for backlight unit group is carried out high-temperature soldering, temperature is 300-310 ℃;
(2) pickling: the diode chip for backlight unit welded carries out chemical attack to diode chip for backlight unit surrounding edge respectively by mixed acid;
(3) mold: the diode chip for backlight unit after acidifying and encapsulation bed material sheet are put in mould, and with black glue, diode chip for backlight unit is entered Row injection molding packaging;
(4) thermoset forming: the diode molded is put into the curing oven 7-9h of 280-300 DEG C, can with improve plastic packaging material By property;
(5) plating: formed the tin layers of thin film again by plating at Diode facets;
(6) low-temperature bake: last, then carry out low-temperature bake.
Preferably, in described step (2), mixed acid mainly includes HNO3、HF、CH3COOH and H2SO4, its proportioning is HNO3: HF:CH3COOH:H2SO4=(8-10):(8-10):(11-13):(3-5)。
Preferably, described step (2) pickling also includes being rinsed diode chip for backlight unit after pickling with a large amount of deionized waters, And cleaned diode chip for backlight unit is put into baking 0.5-1.5h in the baking oven of 100-130 DEG C.
Preferably, in described step (3), black glue is mainly composed of epoxy resin.
Preferably, in described step (5), tin thickness is 1-3mm, to improve the weldability of diode lead, protective Energy.
Preferably, in described step (6), low-temperature bake is carried out in three steps: first, by the baking temperature of described baking box Degree is set as 100-110 DEG C, and baking time is set as 355-365min;Secondly, the baking temperature of baking box is 75-85 DEG C, dries The roasting time is 115-125min;Finally, treating that the temperature inside the box of described baking box is cooled to 50-70 DEG C, baking time is 110- 120min。
Beneficial effect: the invention provides the production technology of a kind of diode, relates to electronic devices and components manufacture technology field, Including welding, pickling, mold pressing, thermoset forming, plating and low-temperature bake, welding material is put in soldering furnace, to diode core Sheet group carries out high-temperature soldering, and temperature is 300-310 DEG C;The diode chip for backlight unit welded passes through mixed acid respectively to diode chip for backlight unit Surrounding edge carries out chemical attack;Diode chip for backlight unit after acidifying and encapsulation bed material sheet are put in mould, and with black glue to two Pole die carries out injection molding packaging;The diode molded is put into the curing oven 7-9h of 280-300 DEG C, to improve plastic packaging material Reliability;Formed the tin layers of thin film again at Diode facets by plating;Finally, then carry out low-temperature bake.The present invention Processing step is simple, simplifies operation, and real cost of production is less, and diode prepared by this method has preferable forward Property, reverse property, breakdown characteristics, and reliable and stable, substantially prolongs the service life of diode.
Detailed description of the invention
For the technological means making the present invention realize, creation characteristic, reach purpose and be easy to understand with effect, below in conjunction with Detailed description of the invention, is expanded on further the present invention.
Embodiment 1:
A kind of production technology of diode, including welding, pickling, mold pressing, thermoset forming, plating and low-temperature bake, diode Production technology is as follows:
(1) welding: putting in soldering furnace by welding material, diode chip for backlight unit group is carried out high-temperature soldering, temperature is 300 DEG C;
(2) pickling: the diode chip for backlight unit welded carries out chemical attack to diode chip for backlight unit surrounding edge respectively by mixed acid;
(3) mold: the diode chip for backlight unit after acidifying and encapsulation bed material sheet are put in mould, and with black glue, diode chip for backlight unit is entered Row injection molding packaging;
(4) thermoset forming: the diode molded is put into the curing oven 7h of 280 DEG C, to improve the reliability of plastic packaging material;
(5) plating: formed the tin layers of thin film again by plating at Diode facets;
(6) low-temperature bake: last, then carry out low-temperature bake.
Wherein, in described step (2), mixed acid mainly includes HNO3、HF、CH3COOH and H2SO4, its proportioning is HNO3:HF: CH3COOH:H2SO4=8:8:11:3;Described step (2) pickling also includes entering diode chip for backlight unit after pickling with a large amount of deionized waters Row rinses, and cleaned diode chip for backlight unit is put into baking 0.5h in the baking oven of 100 DEG C;In described step (3), black glue mainly becomes It is divided into epoxy resin;In described step (5), tin thickness is 1mm, to improve the weldability of diode lead, barrier propterty; In described step (6), low-temperature bake is carried out in three steps: first, and the baking temperature of described baking box is set as 100 DEG C, dries The roasting time is set as 355min;Secondly, the baking temperature of baking box is 75 DEG C, and baking time is 115min;Finally, described baking is treated The temperature inside the box of baking box is cooled to 50 DEG C, and baking time is 110min.
Embodiment 2:
A kind of production technology of diode, including welding, pickling, mold pressing, thermoset forming, plating and low-temperature bake, diode Production technology is as follows:
(1) welding: putting in soldering furnace by welding material, diode chip for backlight unit group is carried out high-temperature soldering, temperature is 305 DEG C;
(2) pickling: the diode chip for backlight unit welded carries out chemical attack to diode chip for backlight unit surrounding edge respectively by mixed acid;
(3) mold: the diode chip for backlight unit after acidifying and encapsulation bed material sheet are put in mould, and with black glue, diode chip for backlight unit is entered Row injection molding packaging;
(4) thermoset forming: the diode molded is put into the curing oven 8h of 290 DEG C, to improve the reliability of plastic packaging material;
(5) plating: formed the tin layers of thin film again by plating at Diode facets;
(6) low-temperature bake: last, then carry out low-temperature bake.
Wherein, in described step (2), mixed acid mainly includes HNO3、HF、CH3COOH and H2SO4, its proportioning is HNO3:HF: CH3COOH:H2SO4=8:9:12:4;Described step (2) pickling also includes entering diode chip for backlight unit after pickling with a large amount of deionized waters Row rinses, and cleaned diode chip for backlight unit is put into baking 1h in the baking oven of 110 DEG C;Black glue main component in described step (3) For epoxy resin;In described step (5), tin thickness is 2mm, to improve the weldability of diode lead, barrier propterty;Institute State low-temperature bake in step (6) to carry out in three steps: first, the baking temperature of described baking box is set as 105 DEG C, baking Time is set as 360min;Secondly, the baking temperature of baking box is 80 DEG C, and baking time is 120min;Finally, described baking is treated The temperature inside the box of case is cooled to 60 DEG C, and baking time is 115min.
Embodiment 3:
A kind of production technology of diode, including welding, pickling, mold pressing, thermoset forming, plating and low-temperature bake, diode Production technology is as follows:
(1) welding: putting in soldering furnace by welding material, diode chip for backlight unit group is carried out high-temperature soldering, temperature is 310 DEG C;
(2) pickling: the diode chip for backlight unit welded carries out chemical attack to diode chip for backlight unit surrounding edge respectively by mixed acid;
(3) mold: the diode chip for backlight unit after acidifying and encapsulation bed material sheet are put in mould, and with black glue, diode chip for backlight unit is entered Row injection molding packaging;
(4) thermoset forming: the diode molded is put into the curing oven 9h of 300 DEG C, to improve the reliability of plastic packaging material;
(5) plating: formed the tin layers of thin film again by plating at Diode facets;
(6) low-temperature bake: last, then carry out low-temperature bake.
Wherein, in described step (2), mixed acid mainly includes HNO3、HF、CH3COOH and H2SO4, its proportioning is HNO3:HF: CH3COOH:H2SO4=10:10:13:5;Described step (2) pickling also includes with a large amount of deionized waters diode chip for backlight unit after pickling It is rinsed, and cleaned diode chip for backlight unit is put into baking 1.5h in the baking oven of 130 DEG C;In described step (3), black glue is main Composition is epoxy resin;In described step (5), tin thickness is 3mm, to improve the weldability of diode lead, protective Energy;In described step (6), low-temperature bake is carried out in three steps: first, and the baking temperature of described baking box is set as 110 DEG C, baking time is set as 365min;Secondly, the baking temperature of baking box is 85 DEG C, and baking time is 125min;Finally, treat The temperature inside the box of described baking box is cooled to 70 DEG C, and baking time is 120min.
Positive tropism Reversely property Breakdown characteristics
Embodiment 1 Qualified Good Good
Embodiment 2 Excellent Excellent Excellent
Embodiment 3 Good Qualified Good
Existing technical parameter Qualified Qualified Qualified
According to above table data, embodiment 2 uses the production technology of diode of the present invention and existing technology Parameter compares, and has positive tropism, reverse property, breakdown characteristics, and reliable and stable, substantially prolongs the service life of diode.
The invention provides the production technology of a kind of diode, relate to electronic devices and components manufacture technology field, including welding, Pickling, mold pressing, thermoset forming, plating and low-temperature bake, put in soldering furnace by welding material, and diode chip for backlight unit group is carried out height Temperature welding, temperature is 300-310 DEG C;Diode chip for backlight unit surrounding edge is entered respectively by the diode chip for backlight unit welded by mixed acid Row chemical attack;Diode chip for backlight unit after acidifying and encapsulation bed material sheet are put in mould, and with black glue, diode chip for backlight unit is entered Row injection molding packaging;The diode molded is put into the curing oven 7-9h of 280-300 DEG C, to improve the reliability of plastic packaging material; Formed the tin layers of thin film again at Diode facets by plating;Finally, then carry out low-temperature bake.The letter of present invention process step Single, simplify operation, real cost of production is less, and diode prepared by this method has preferable positive tropism, reverse property, hits Wear characteristic, and reliable and stable, substantially prolongs the service life of diode.
The foregoing is only embodiments of the invention, not thereby limit the scope of the claims of the present invention, every utilize this Equivalent structure or equivalence flow process that bright description is made convert, or are directly or indirectly used in other relevant technology necks Territory, is the most in like manner included in the scope of patent protection of the present invention.

Claims (6)

1. the production technology of a diode, it is characterised in that include welding, pickling, mold pressing, thermoset forming, plating and low temperature Baking, the production technology of diode is as follows:
(1) welding: putting in soldering furnace by welding material, diode chip for backlight unit group is carried out high-temperature soldering, temperature is 300-310 ℃;
(2) pickling: the diode chip for backlight unit welded carries out chemical attack to diode chip for backlight unit surrounding edge respectively by mixed acid;
(3) mold: the diode chip for backlight unit after acidifying and encapsulation bed material sheet are put in mould, and with black glue, diode chip for backlight unit is entered Row injection molding packaging;
(4) thermoset forming: the diode molded is put into the curing oven 7-9h of 280-300 DEG C, can with improve plastic packaging material By property;
(5) plating: formed the tin layers of thin film again by plating at Diode facets;
(6) low-temperature bake: last, then carry out low-temperature bake.
The manufacturing process of automotive hub the most according to claim 1, it is characterised in that mixed acid master in described step (2) HNO to be included3、HF、CH3COOH and H2SO4, its proportioning is HNO3:HF:CH3COOH:H2SO4=(8-10):(8-10):(11- 13):(3-5)。
The manufacturing process of automotive hub the most according to claim 1 and 2, it is characterised in that described step (2) pickling is also wrapped Include and with a large amount of deionized waters, diode chip for backlight unit after pickling is rinsed, and cleaned diode chip for backlight unit is put into 100-130 DEG C baking oven in dry 0.5-1.5h.
The manufacturing process of automotive hub the most according to claim 1, it is characterised in that in described step (3), black glue is main Composition is epoxy resin.
The manufacturing process of automotive hub the most according to claim 1, it is characterised in that tin thickness in described step (5) For 1-3mm, to improve the weldability of diode lead, barrier propterty.
The manufacturing process of automotive hub the most according to claim 1, it is characterised in that low-temperature bake in described step (6) Carrying out in three steps: first, the baking temperature of described baking box is set as 100-110 DEG C, baking time is set as 355- 365min;Secondly, the baking temperature of baking box is 75-85 DEG C, and baking time is 115-125min;Finally, described baking box is treated The temperature inside the box be cooled to 50-70 DEG C, baking time is 110-120min.
CN201610618017.2A 2016-08-01 2016-08-01 A kind of production technology of diode Withdrawn CN106128955A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108010833A (en) * 2017-12-01 2018-05-08 山东理工大学 For the mixed acid of diode cleaning, production method, diode cleaning method
CN108677244A (en) * 2018-06-05 2018-10-19 陈涛 A kind of semiconductor diode production technology
CN108672597A (en) * 2018-05-29 2018-10-19 陈欣洁 A kind of semiconductor diode production technology
CN108796592A (en) * 2018-06-05 2018-11-13 陈涛 A kind of semiconductor diode electroplating processes system
CN109830577A (en) * 2019-01-18 2019-05-31 重庆市妙格科技有限公司 A kind of manufacturing method of high quality light-emitting diode

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020042156A1 (en) * 2000-10-06 2002-04-11 Hsing Chen Packaging types of light-emitting diode
CN102214570A (en) * 2010-04-04 2011-10-12 如皋市易达电子有限责任公司 Production method of high stability trigger diode
CN102263140A (en) * 2011-08-10 2011-11-30 山东沂光电子股份有限公司 Plastic package power diode and manufacturing technology thereof
CN102651404A (en) * 2012-05-25 2012-08-29 常州银河电器有限公司 Axial diode and fabrication method of axial diode with polyimide glue as protection glue layer
CN103681319A (en) * 2013-12-18 2014-03-26 常州星海电子有限公司 Manufacturing technology of diodes

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020042156A1 (en) * 2000-10-06 2002-04-11 Hsing Chen Packaging types of light-emitting diode
CN102214570A (en) * 2010-04-04 2011-10-12 如皋市易达电子有限责任公司 Production method of high stability trigger diode
CN102263140A (en) * 2011-08-10 2011-11-30 山东沂光电子股份有限公司 Plastic package power diode and manufacturing technology thereof
CN102651404A (en) * 2012-05-25 2012-08-29 常州银河电器有限公司 Axial diode and fabrication method of axial diode with polyimide glue as protection glue layer
CN103681319A (en) * 2013-12-18 2014-03-26 常州星海电子有限公司 Manufacturing technology of diodes

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108010833A (en) * 2017-12-01 2018-05-08 山东理工大学 For the mixed acid of diode cleaning, production method, diode cleaning method
CN108010833B (en) * 2017-12-01 2020-03-24 山东理工大学 Mixed acid for cleaning diode, production method and diode cleaning method
CN108672597A (en) * 2018-05-29 2018-10-19 陈欣洁 A kind of semiconductor diode production technology
CN108672597B (en) * 2018-05-29 2019-08-20 吉林瑞能半导体有限公司 A kind of semiconductor diode production technology
CN108677244A (en) * 2018-06-05 2018-10-19 陈涛 A kind of semiconductor diode production technology
CN108796592A (en) * 2018-06-05 2018-11-13 陈涛 A kind of semiconductor diode electroplating processes system
CN109830577A (en) * 2019-01-18 2019-05-31 重庆市妙格科技有限公司 A kind of manufacturing method of high quality light-emitting diode
CN109830577B (en) * 2019-01-18 2021-06-15 深圳市广盛浩科技有限公司 Manufacturing method of high-quality light-emitting diode

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Application publication date: 20161116